The machines are coming for us and we can’t pretend like we didn’t see it coming, because even the lowly metronome has been trying to warn us for years. Here are 100 of those ticking boxes starting at different beats but then slowly synchronizing themselves together toward the same beat. It’s like they’re all being controlled by the same mind.

What’s happening is not exactly magic but is still pretty cool: the metronomes are transferring energy to the platform they’re on, which then transfers that energy back to the metronomes—until they all sync up and start hitting the beat in one glorious wavelength.